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About write call function

From: Ajeet kumar.S <ajeetkumar.s_at_jasmin-infotech.com>
Date: Wed, 14 May 2008 11:25:57 +0530

Hi All;

        For receiving the data coming from server I set below option and
write ReadCallback function. In ReadCallback function I am storing data in
char Http_Rx_Data[102400] and char *http_ptr= &Http_Rx_Data[0];

   

curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, ReadCallback);

 

int totalsize;

void ReadCallback( char *data_ptr, size_t size, size_t nmemb, char *data)

{

     

     unsigned int data_size;

    data_size = size * nmemb;

    if ((totalsize+data_size) <= 102400)

    {

         memcpy(http_ptr,data_ptr,data_size);

         http_ptr+=data_size;

         totalsize += data_size;

        printf("\n ReadCallback - totalsize = %d \n",totalsize);

        fflush(stdout);

 

   }

  else

    {

        totalsize = 0;

        http_ptr = &Http_Rx_Data[0];

        memcpy(http_ptr,data_ptr,data_size);

        http_ptr+=data_size;

        totalsize += data_size;

        printf("\n ReadCallback - totalsize = %d \n",totalsize);

        fflush(stdout);

}

 

}

 

Actually my doubt is if we want to write the data to our defined buffer it
is possible instead of file write. Actually I saw after curl_easy_perform
response was

CURLE_WRITE_ERROR.

Another way I also tried http_ptr =data; this is failed. Actually if we do
http_ptr =data & memcpy(http_ptr,data_ptr,data_size);

 then we will not able to write the data what we define buffer
Http_Rx_Data[102400];

Please suggest me how we can write data to our own defined buffer using
write call back function.

 

Thank you.

Regards;

 

Ajeet Kumar Singh

 

 
Received on 2008-05-14

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